Bathtub faucet



FIG. 1 is a perspective view of a bathtub faucet showing my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a rear side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the Figures are for illustrative purposes only andform no part of the claimed design.

The ornamental design for a bathtub faucet, as shown and described.